Pacinian cropsucles are located deep into the skin. They have concentric flattened layers of Schwann Cells. You can also see the nerve fiber in the center, and protruding out of the bottom of the corpuscle.

N= Nucleus
Arrows point to some intercalated discs that appear as dark bands.

Cardiac Muscle is found only in the heart and has one or two centrally located nuclei. Note the striations which are also present in skeletal muscle, however, cardiac muscle is able to branch while smooth muscle cannot.